docs: def _storage_list_keys(bucket, pattern):
    """ List all storage keys in a specified bucket that match a pattern. """
    data = [{'Name': item.metadata.name,
             'Type': item.metadata.content_type,
             'Size': item.metadata.size,
             'Updated': item.metadata.updated_on}
            for item in _storage_get_keys(bucket, pattern)]
    return datalab.utils.commands.render_dictionary(data, ['Name', 'Type', 'Size', 'Updated'])